Mark and john are developing a program using python. they name a variable 24_hour_mart, but then recognize that this name violates a python naming convention. what naming convention does it violate?
variable names can not include the underscore character
variable names can not begin with a number.
variable names can not exceed ten characters in length.
variable names can not be fewer than fifteen characters in length.

Option 2: Variable names can not begin with a number.

Explanation:

As given Mark and John named a variable as 24_hour_mart while writing a program in python.

While it is forbidden to name a variable starting with any digit, only alphabets (capital and smaller) and underscore can be the first letter of the variable name.

Moreover, by considering the other options given:

Variables named in python language must not be the keywords as they are reserved for other purposes.

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